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Finding the Fourth Proportional to 557,521.60, 769,375.56 and 302,874.61

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Solution

The fourth proportional to 557,521.60, 769,375.56 and 302,874.61 is: 417,964.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,521.60 : 769,375.56 = 302,874.61 : x
  2. Step 2: Convert to fraction form
    557,521.60/769,375.56 = 302,874.61/x
  3. Step 3: Cross multiply
    557,521.60x = 769,375.56 × 302,874.61
  4. Step 4: Simplify right side
    557,521.60x = 233,024,322,678.53
  5. Step 5: Solve for x
    x = 233,024,322,678.53/557,521.60
  6. Step 6: Final answer
    x = 417,964.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.